// Jubatus: Online machine learning framework for distributed environment
// Copyright (C) 2011 Preferred Infrastructure and Nippon Telegraph and Telephone Corporation.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#pragma once

#include <map>
#include <pficommon/lang/scoped_ptr.h>
#include "num_filter.hpp"
#include "dynamic_loader.hpp"

namespace jubatus {
namespace fv_converter {

class dynamic_num_filter : public num_filter {
 public:
  dynamic_num_filter(const std::string& path,
                        const std::string& function,
                        const std::map<std::string, std::string>& params);

  double filter(double value) const;

 private:
  dynamic_loader loader_;
  pfi::lang::scoped_ptr<num_filter> impl_;
};

}
}
